diff --git a/.github/workflows/build-docset.yml b/.github/workflows/build-docset.yml
index 69494bc1..0dfce69e 100644
--- a/.github/workflows/build-docset.yml
+++ b/.github/workflows/build-docset.yml
@@ -17,7 +17,7 @@ jobs:
   docset:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0  # get correct version
       - uses: actions/setup-python@v4
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e98c8104..1f01595a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -70,7 +70,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version-file: .python-version-default
@@ -168,7 +168,7 @@ jobs:
         os: [ubuntu-latest, windows-latest]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version-file: .python-version-default
@@ -203,7 +203,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version-file: .python-version-default
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index a5d32ce9..c0e6a208 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v2
diff --git a/.github/workflows/pypi-package.yml b/.github/workflows/pypi-package.yml
index de146827..63c6b784 100644
--- a/.github/workflows/pypi-package.yml
+++ b/.github/workflows/pypi-package.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0